Hyundai Santa Cruz: Engine Control System / Variable Force Solenoid (VFS)
- Description
Continuous Variable Valve Timing (CVVT) system advances or retards the
valve timing of the intake and exhaust valve in accordance with the ECM
control signal which is calculated by the engine speed and load.By
controlling CVVT, the valve over-lap or under-lap occurs, which makes
better fuel economy and reduces exhaust gases (NOx, HC) and improves
engine performance through reduction of pumping loss, internal EGR
effect, improvement of combustion stability, improvement of volumetric
efficiency, and increase of expansion work.This system consist of the
Variable Force Solenoid (VFS), CVVT oil control valve (OCV)[Intake],
CVVT oil control valve (OCV)[Exhaust], CVVT oil temperature sensor which
supplies the engine oil to the cam phaser or cuts the engine oil from
the cam phaser in accordance with the ECM PWM (Pulse With Modulation)
control signal, the Cam Phaser which varies the cam phase by using the
hydraulic force of the engine oil.Variable force solenoid (VFS) [intake]
changes its force depending on the PWM duty to control the stroke of
the CVVT oil control valve (OCV) [intake] bolt. The delivered oil
rotates the rotor connected to the camshaft of the cam pager and rotates
the camshaft to the engine rotating direction (intake advanced /
exhaust retarded) or the opposite direction (intake retarded / exhaust
advanced) to change the phase angle of the cam.

- Specification
Item | Specification |
Coil Resistance (Ω) | 6.0 - 7.0 [20°C (68°F)] |
Pin Count | 2 Pin |
- Circuit Diagram

Harness Connector

- Removal
1.Turn the ignition switch OFF and disconnect the battery negative (-) terminal.
2. Disconnect the variable force solenoid connector (A).

3. Remove the installation bolt, and then remove the variable force solenoid (A).
Tightening torque :9.8 - 11.7 N.m (1.0 - 1.2 kgf.m, 7.2 - 8.6 lb-ft)

- Installation
1.Install in the reverse order of removal.
• Replace the O-ring (A) with a new one.

• When installing, apply engine oil to the injector O-ring.
- Description
Purge Control Solenoid Valve (PCSV) is installed on the surge tank and
controls the passage between the canister and the vacuum line.The
evaporative gases gathered in the canister ...
- Description
Fuel Pressure Control Valve is installed on the high pressure fuel pump
and controls fuel flow flowing into the injectors in accordance with
the ECM signal calculated based on var ...
Other information:
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Rear Door Latch
- Components Location
1. Rear door latch
- Replacement
1.Remove the rear door module.(Refer to Rear Door - "Rear Door Module")
2.Remove the rear door inside handle cage (A).
3.Separate the rear door outside handle base connector and wiring harness (A).
4.Remove the rear door ins ...
Hyundai Santa Cruz (NX4A OB) 2021-2025 Service Manual: Shift Lever
- Components
1. Shift lever knob & boots assembly2. Shift lever assembly3. Shift cable4. Manual control lever5. Shift cable retainer
- Removal
1.Remove the shift lever knob & boots (A) pull both of it up.
2.Remove the floor console assembly.(Refer to Body (Interior and Exteri ...